Scoring and trimming machine



Nov. 8, 1932. c. E. IVES 1,387,307

SCORING AND TRIMMING MACHINE Filed on. 16, 1930 s Sheets-Sheet 1INVENTOR CLIFFOEDE /l/E6.

ATTORNEY Nov. 8, 1932. c, E, E 1,887,307

SCORING AND TRIMMING MACHINE Filed Oct. 16, 1950 5 Sheets-Shet 2ATTORNEY Nov. 8, 1932. v Q E WE I 1,887,307

SCORING AND TRI MMING MACHINE Filed Oct. 16. 1930 5 Sheets-Sheet 5Fir::-ii

INVENTOR CUFF-0E0 E. /VE5- ATTORNEY Patented Nov. 8, 1932 UNITED STATESPATENT OFFICE CLIFFORD E; IVES, OF WILMET'IE, ILLINOIS, ASSIGNOB' 'IOUNITED STATES GYPSUM COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS SCORING AND TBLIMHING MACHINE Application filed October 18Q1880. Serial No. 489,049.-

This invention relates to a scoring and trimming machine and hasreference more particularly to machines of the type used in themanufacture of psum board. In the manufacture o gypsum board, such assquare edge wallboard, it is customary to form score marks where thepaper is to be folded about the cementitious core material which iscomposed usually mainly of g sum, so that sharper edges will result.These scoring devices have usually consisted of carborundum wheelsrotated at a high speed from a common counter shaft and with sharpenededges engaging the board to produce the score marks. These carborundumwheels need frequent sharpening and truing up so as to produce scoremarks of the desired depth, and so'that both edges of the board will besimilar and so that the edges will not be in or out due to improperdepth ofscore marks. At times the stones break endangering the lives ofworkmen. The carborundum stones also frequently require replacement whenthe diameter is reduced to a given amount.

An object of this invention, therefore, is to produce a scoringdevicewhich may be readily adjusted and in which the scoring wheels areindividually motor driven.

Another obect of the invention is to produce a scoring device which willremain in adjustment for long periods of operation of the board makingmachine, so as to produce boards of uniform quality. A further object ofthe invention is to provide a scoring device which will be self-sharpand the scoring device itself; also to improve scoring devices in otherrespects hereinafter speclfiedand claimed. i i I Reference is tofbe hadto the accompanying drawings forming a part of this specification, inwhich Fig. 1 is a lan view of a board machine with a pair 0 my improvedscoring devices in EQSltlOIl, v,

ig. 2 is an elevation of the scoring device with parts removed todisclose the construc- I tion, Y

Fig. 3 is a sectional elevation on line 3--3 of Fig. 2 showing the speedreducing gearin% associated with the scoring device,

ig. 4 is an elevation of the scoring device to with parts broken away todisclose the construction,

Fig. 5 is a fragmentary enlarged view of one of the scoring .saws,

Fig. 6 is a sectional elevation through the saw taken on the line 6-6 ofFig. 5,

Fig. 7 is a fragmentary sectional view of one edge of a wall boardmanufactured by the practice of scoring,

Fig. 8 is a sectional elevation of the lower support rolls for thescoring saws,

Fig. 9 is a sectional view of a modified form of wall board edge,

Fi 10 is a sectional elevation of the scoraing evice for making the wallboard edge shown in Fig. 9.

Fig. 11 is a sectional elevation taken on line 1111 of Fig. 8, and

Fig. 12 is a sectional elevation taken on line 1212 of Fig. 10.

In a board making machine, it is customary to rovide a table 15 overwhich continually sli es a continuous sheet of paper 16.

The edges of the paper strip or sheet of other material 16 are scored toform score 35 marks 17 and 18, so that the said edges of the board maybe folded upwardly to form a fold 19 and inwardly to form a fold 20,said fold inclosing a central core material 21 of cementitious materialwhich ordinarily is composed mainly of gypsum; Before the setting of the[plane of the upper surface of'thepaper cover sheet22. i

. Instead of the arbon-team" wh els 6 01- narily used forproducing thescore marks 17 .and 18,I1provideilnproved saws 25, which are in the formof circular discs. Each of said saws has a concentric central opening 26for receiving a drive shaft 27, said saw being keyed onto the driveshaft 27, by a suitable key engaging a keyway 28,formed in each sawadjacent to central opening 26. Teeth 29 are formed around the peripheryof the saw 25, each of said teeth being formed by cutting right angledperipheral, radially extending slots 29a in the saw disc so as toprovide a semi-circular cutting face 30. The saw tooth, therefore, hasthe outline shown in Fig. 6, and it will be obvious that if the cuttingedge on one side of the teeth becomes worn, the saw is turned around onthe shaft, so that the opposite cutting edge of the tooth comes into 0eration. In this way, b frequently reversing the saws, the latter becomeselfsharpening and the saw has along, life until the saw teeth becomeworn down to the base thereof. These saws are preferablyof a highcarbon, heat-treated steel which is suitable for-producing cutting edgeshaving a high wear resistance. One or more of the saws 25 are retainedon the shaft 27 by suitable spacing collars 32, and are clamped togetherby nut 33 which is held in place by lock nut 34.

The shaft 27 is preferably rotatably-supported in ball bearings 36 and37 mounted in the outer wall 38 and inner wall 39 respectively of asuitable gear case for holding speed reduction gearing. Suitable bolts40 pass through the walls 38 and 39 of the gear case and engage theframe 41 of an electric motor which is preferably dust-tight. Motor 41is provided with a central shaft 42, a drive pinion 43 being ri idlysecured to said shaft 42 by a key 444 saw'shaft 27'by a key'46. A gear47 is mounted upon a shaft 48 and meshes with the pinion 45, and alsowith a pinion 50 secured to a shaft 51 by means of a key 52. A gear 53is also secured to the shaft 51 and meshes with the pinion 43; Thecountershaft 51 acts as a speed reducer and the idler shaft 48 acts tochange the direction of rotation of the saw shaft 27. The shafts 48 and51 are mounted in suitable ball bearin 55 and 56 respectively containedin the walls of the gear case. Suitable packing rin maybe rovided aroundthe sha ts, such as t e rings 5 around the saw shaft 27, so as toprevent leakage of grease, and sothat grease may be kept in the gearcase to provide suitable lubrication for the gears contained therein. .8A supporting bracket 59 is sucured to the motor frame 4l by means ofscrews 60, said bracket having outstanding concentric bearings 60a and61 for receiving a horizontally extending adjusting screw 62, Thebearing.

61 is threaded internally to receive a threaded .section "63 formed onthe screw .62, and the extreme end of rod 62 beyond the threaded section63 is provided with an annular p1n1on 45 issecured to the is providedwith a The screw 62 is rotatably received at its opposite end by thebearing 60a, and by an upstanding flange 70 formed on the table bracket66. An adjusting nut 71 is secured to the outermost end of screw 62adjacent flange 70, by means of a pin 72, and said nut 71 is providedwith a knurled annular section 73 for manual engagement. The tablebracket 66 is secured to the table 15 by screws 74 having knurled heads75, and are also provided with annular shoulder 76 to prevent themisplacement of the bolts when the motor and associated scoring devicesare removed from the table 15. A sleeve 77 may be provided around thescrew 62 between the bearings 60a and 61, and said sleevemay be chromiumplated to improve the appearance and to protect threads from stucco. Acoil spring 78 may also be provided on screw 62 between the flange 65and bearing 61, so as to take up any possible play in the threads 63 andthus give accurate positioning of the saws 25 laterally relative to theedges of the paper sheet 16.

It will be noted that the bracket 59 'has a pivotal engagement with thescrew 62 so that the vertical position (if the motor frame 41 and thescoring saws 125 may be accurately adjusted to give the proper depth ofscore marks.

This vertical adjustment of the saws 25 is accomplished by means of anadjusting screw 80 which is rotatably supported at its upper end in apair of split flanges 81 formed -on the gear case wall 39, these flangesbeing lower end of the screw 80 has a threaded section- 83 which engagesan internally threaded opening in an outstanding flange 84 formed on thelower side of the gear case wall 39. The extreme lower end of the screw80 rests upon the table 15 and supports the weight of the motor andattached mechanism jointly. with the screw 62. The u per end of thescrew 80 urled' adjusting head 86 having an annular calibrated section87 on its lower face; An upstanding flange 88 is formed on-the gear caseand has a score mark registering with the calibration on the section 87,so as to provide a micrometer adjustment for accurately adjusting thescrew 80. It will thus be seen that by rotating the head 86,the exactdepth of score marks made by the saws 25 is accurately adjusted to givethe desired results.

An elongated-slot 90 is formed transversely in the table 15, and a shaft91 is rotatably mounted longitudinally and below the slot 90, beingsupported by roller bearings 92 and downstanding flanges 93 suspendedfrom the lower part of the table 15 adjacent said slot 90. One or morerollers 94 and 95 are secured to the shaft 91 by feather keys 96operating in a keyway 97 formed longitudinally the length of the shaft91. Set screws 98 bear at their inner ends on the keys 96 so as to lockthe rollers 94 and 95 in the desired position longitudinally of theshaft 91. The purpose of having a plurality of rollers on the shaft 91is to permit making boards of different widths on the same machine bymoving the entire motor frame 41, and its attached mechanisms,transversely on the table 15.- .A plurality of holes for the screws 74are provided in the table 15 so as to permit the scoring device to bemoved transversely on the table 15 until the scoring saws 25 arepositioned above the outer roller 95 or the inner roller 94, de-

pending upon the width of board to be manufactured. The rollers 94 and95 provide an anti-friction surface for pressing the paper against thescoring saws 25. 1

Under certain circumstances, it is desirable to make a board having afolded edge of the type shown in Fig. 9, in which both the lower coversheet 100 and the upper cover sheet 101 are scored with score marks 102and 103 respectively. For this type of board', it is also desirable thatthe edge 104 of the lower cover sheet 100 be trimmedat the time ofmanufacture to a width equal to the thickness of the board. One edge ofthe upper cover sheet 101 outside the score mark 103 has a chamferedsurface 102 so that a feather edge is provided which is secured by alayer of adhesive 105 to the fold 106 on the lower cover sheet 100.

In order to accomplish this combined trimming and scoring operation onthe lower cover sheet 100, I provide a trimming knife 107 having asharp, annular trimming-edge 108, this knife being substituted insteadof one of the scoring saws shown in Fig. 4. A shaft 91 is rotatablymounted in ball bearings 92,, which are retained in downwardly extendingflanges 109 secured to the bottom of table 15 adjacent an elongated'slot 90 formed in said table. A roller 110 is mounted upon the shaft 91and is slidablysecured thereon by a feather key 111 which is mounted ina keyway 97 formed longitudinally of said shaft. The feather key 111 hasa lug 112 formed on one end, so as to limit the sliding movement of theroller 110 to the left as seen in Fig. 10 under the action of a coilspring 113 placed around the shaft 91,. The spring 113 is retainedbetween an annular collar 114 formed on the roller 110, and a col- .107for one of the saws 25.

lar 115 also mounted upon the shaft 91, and rigidly secured thereto bymeans of a set screw 116 bearing against one end of the 1 feather key111. The collar 115 is provided with an integral sleeve 117 enclosingthe.

spring 113 and slidably and loosely telescoping over the annularshoulder 114 so as to from a spring cylinder for said spring. Key

111 has a recess 118 formed in its outer surface so as to provideclearance for the spring 113. i I

When the trimming knife 107 is lifted away from the edge of roller 110,said roller moves axially to the left under the action of spring 113 asseen in Fig. 10. lVhcn it is desired to return the roller 110 to therighthand position so as to resume trimming 0 erations, a rod 120 ismoved axially to the right by manual actuation of a pressure head 121formed on one end of said rod. A collar 122 is secured to the rod 120 byset screw 123 having an adjustin wing head 124. The collar 122 engages te outer portion of the roller 110 so as to move said roller to the rightwhen the rod 120 is moved to the right. The rod 120 passes looselythrough an opening 125 formed in a frame 126, the latter be ing securedto the under face of the table 15- by means of a bolt 127. A coil spring128 is retained between one of the downstanding flanges 109 and thepressure head 121, so as to normally urge the rod 120 to the left untilsaid movement is limited by a stop pin 129 engaging the opposite flange109.

In operation, the motor frame 41 is pivotally supported upon the screw62, which in turn is supported upon flanges 65 and formed upon thebracket 66. The microm eter adjusting screw extends downwardly throughflanges 81 and 84 formed on the gear case, and its lower end rests uponthe table 15 so that by rotation of said screw 80, the depth of scoremarks made by the scoring saws 25 is accurately adjusted. The positionof the scoring saws 25 laterally of the sheet of paper 16 is accuratelyadjusted by rotating the screw 62, which moves the bracket 59 and motorframe 41 axially between the flanges 65 and 70 against the action ofspring 78. The saws 25 are secured on the saw shaft 27 by means of nuts33, 34 and collars 32. This.

.95. In the device shown in Figs. 10 and 12,

a combined trimming and scoring action is obtained by substituting thetrimming knife This knife 107 bears against the edge of the pressureroller 110, and when the knife 107 is lifted upwardly, roller 110 movesto the left until its movement is limited by lug 112 on feather key 111.

-. ,,rotatably supported below said strip of ma To move roller 110 tothe right, as seen in Fig. 10, pressure is applied manually to the head121, so that collar 122 engages the roller 110 to give it the desiredright-hand movement, after which rod l'20jmoves to the left under theaction of spring 128 until its movement is limited by stop pin 129engaging flange 109.

I would state in conclusion that while the illustrated examplesconsitute a practical emof the teeth to the sheet to he scored. Y 2. Ina scoring device a motor, a shaft otatably associated wit said motor andada ed to be rotated thereby, a trimming kni e and a. scoring sawsecured to said shaft,

and means for moving a strip of material adjacent said shaft so as to beoperated on by said knife and saw.

3. In a strip treating apparatus, a table for supporting a moving stripof material to be treated, a motor supported by said table, ashaftrotatably associated with said-motor, a trimming knife and ascoring saw secured to said shaft so as to operate upon 'said strip ofmaterial, and a roller shaft rotatably associated with said table below'said strip of material andadapted to coopcrate with the trimmin knifeand scoring saw to accomplish the trimming and scoring of said strip ofmaterial. p

4. In an apparatus for operating upon strip material, a table, a motor.supported by said table, a shaft rotatably associated with said motor, atrimming knife and a scoringsaw mounted upon said shaft so as to operateupon said strip of material, a roller.

. rotatably mounted below said strip of material and adapted tocooperatewith said trimmng knife and scoring saw, means for resilientlypressing said roller against the edge of said trimming knife and formoving said roller-into an inoperative position, and manrestoring 581d.roller to operaual means for tive osition.

'5. n a strip operating device, a shaft having a trimming knife and ascoring saw secured thereto, a table located below said shaft andadapted to support a continuous strip of material to be trimmed andscored, a roller rising adisc having terial so as to press said materialagainst said scoring saw, resilient means for pressing said roller aainst said knife, and a manually operate? rod for moving said rolleraxially.

6. A scoring device comprising a motor frame, means for pivotallysupporting said motor frame on a substantially horizontal axis, meansfor adjusting said motor frame about its. pivot comprising an adjustmentelement supporting a portion of the weight of said motor frame and themotor carried thereby independently of the pivotal support, and scoringsaws operatively associated with said motor and movable therewith.

7. In a scoring device, a motor frame and a horizontally pivoted supportbracket, a

table substantially supporting said motor frame through said bracket andadapted to support a moving sheet of material tobe, scored, scoring sawsoperatively associated with said motor so as to form score marks in saidsheet of material, and means associated with said bracket for laterallyadjusting said motor frame and scoring saws transversely of the movingstrip of material.

8. In a scoring device, a table for supporting a movingstrip of materialto be scored, a motor frame pivotally mounted upolisaid table on an axistransverse of the strip of material, scoring saws operatively associatedw th said motor frame, means for adjusting said motor frame and sawsvertically relative to said moving strip of mat an ad ustment elementconnected with said motor frame and supporting a substantial portion ofthe weight thereof, and means as-' sociated with said motor frame foradjusting the saws laterally relative to said moving strip of material.i

9; A scoring saw comprising a disc having peripheral substantiallyradially extending slots formed therein to provide teeth around the edgeof said saw, said saw being selfsharpening upon'reversal so as topresent the opposite cutting edges of the teeth to the sheet to bescored.

' 10. In a scoring device, means for actuating the scoring element, and

erial comprising a scoring element.

means for directing material to be scored under said scoring element,said scoring element comprising a metal scoring disc having peripheralsubstantially right angled radial- 1y extending slots formed in the edgethereof so as to provide cuttingteeth along the edge ofsaid disc.

, 11., In a -scoring device,'a scoring element,

means for actuating the scoring element, and

means for directing material to be scored under said scoring element,said scoring element comprising a high carbon, heat-treated steelscoring disc having peripheral substantially right angled radiallyextending slots formed in the edge thereof so as to provide cuttingteeth along the edge of said disc.

12. In a scoring device, a motor, a shaft rotatably associated with saidmotor, a trimming knife and scoring saw secured to said shaft, means formoving a strip of material adjacent said shaft so as to be operated onby said knife and saw, and means for adjusting said motor and shaft asthe dimen-' sions of the material are varied.

13. In a scoring device, a table for supporting a moving strip ofmaterial to be scored, a motor frame supported on said table, scoringsaws operatively associated with said motor frame, means for adjustingsaid motor frame and saws transversely of the strip of material, andmeans under the scoring saws and pressing the strip of material againstthe saws, said means comprising a roller keyed to a freely rotatableshaft and adjustable transversely of the strip of material independentlyof said motor frame.

14. In a scoring device, a motor, a gear box secured to the motor, apivoted bracket partially supporting said motor upon a table, a shaftrotatably mounted in said gear box and adapted to be rotated by themotor, said table being adapted to support a continuous strip ofmaterial to be scored, scoring saws on said shaft adapted to engage saidstrip of material to produce score marks thereon, and means associatedwith said gear box adapted, together with said bracket, to support saidmotor and gear boX on said table, and being manually operable to raiseor lower said saws with relation to the strip of material being operatedupon.

15. In a scoring device, a motor frame, a pivoted bracket supportingsaid motor frame upon .a table, said table being adapted to supportmaterial to be scored, scoring saws operatively associated with saidmotor so as to form score marks in said material, and means forming thepivot of said bracket and manually operable to adjust said motorframeand-said scoring saws. laterally of the material to be scored.

16. In a scoring device, a motor frame, a

ing saws, a shaft mounted longitudinally below said slot, and a rolleron said shaft to provide anti-friction surface for pressing the materialto be scored against the scoring saws.

CLIFFORD E. IVES.

pivoted bracket supporting said motor frame upe' a table, said tablebeing adapted to support material to be scored, scoring saws operativelyassociated with said motor so as to form score marks in said material,means forming the pivot of said bracket and manually operable to adjustsaid motor frame and said scoring saws laterally of the material to bescored, and means for securing said bracket in different positionsacross said table transversely with relation to the material to bescored as the transverse dimensions of the material are changed,

17. The combination with a scoring device comprising a motor and scoringsaws rotatably associated therewith, of atable support mg said motor andsaws and the material to be scored, a slot in said table under the scor-

